PlanetScale (Vitess MySQL) vs. Fly.io Firecracker MicroVMs — Interactive Cost & Performance Calculator
Compare PlanetScale (Vitess MySQL) vs Fly.io Firecracker MicroVMs side-by-side. Use our interactive calculator to estimate exact monthly costs, savings, and performance trade-offs at your scale.
PlanetScale (Vitess MySQL)
Best for: Horizontal MySQL sharding & zero-downtime migrations
Fly.io Firecracker MicroVMs
Best for: Multi-region stateful Elixir, Go & Rust servers
Side-by-Side Technical & Commercial Breakdown: PlanetScale (Vitess MySQL) vs. Fly.io Firecracker MicroVMs
| Dimension | PlanetScale (Vitess MySQL) | Fly.io Firecracker MicroVMs |
|---|---|---|
| Platform Provider | PlanetScale | Fly.io |
| Base Monthly Plan | $39/mo | $10/mo |
| Compute Rate (per 1M reqs) | $0.15 | $0.14 |
| Storage / Bandwidth (per GB) | $0.250/GB | $0.150/GB |
| Typical Cold Start | 0 ms (Clustered) | 250 ms machine wake |
| Included Free Tier | Enterprise trial | Pay-as-you-go resource consumption |
| Best Use Case | Horizontal MySQL sharding & zero-downtime migrations | Multi-region stateful Elixir, Go & Rust servers |
Frequently Asked Questions
Which is more cost-effective in 2026: PlanetScale (Vitess MySQL) or Fly.io Firecracker MicroVMs?
It depends on your workload volume. Use the interactive sliders above to model your exact monthly scale. PlanetScale (Vitess MySQL) (Horizontal MySQL sharding & zero-downtime migrations) and Fly.io Firecracker MicroVMs (Multi-region stateful Elixir, Go & Rust servers) have different unit economics that cross over as volume scales.
When should an engineering team choose PlanetScale (Vitess MySQL) over Fly.io Firecracker MicroVMs?
Choose PlanetScale (Vitess MySQL) when your primary priority is: Horizontal MySQL sharding & zero-downtime migrations. Choose Fly.io Firecracker MicroVMs when you prioritize: Multi-region stateful Elixir, Go & Rust servers.